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Finding the Fourth Proportional to 9,069.12, 12,515.12 and 5,531.68

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Solution

The fourth proportional to 9,069.12, 12,515.12 and 5,531.68 is: 7,633.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,069.12 : 12,515.12 = 5,531.68 : x
  2. Step 2: Convert to fraction form
    9,069.12/12,515.12 = 5,531.68/x
  3. Step 3: Cross multiply
    9,069.12x = 12,515.12 × 5,531.68
  4. Step 4: Simplify right side
    9,069.12x = 69,229,639.00
  5. Step 5: Solve for x
    x = 69,229,639.00/9,069.12
  6. Step 6: Final answer
    x = 7,633.56

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.